route.c revision 93957
1/* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35#if 0 36static char sccsid[] = "From: @(#)route.c 8.6 (Berkeley) 4/28/95"; 37#endif 38static const char rcsid[] = 39 "$FreeBSD: head/usr.bin/netstat/route.c 93957 2002-04-06 10:02:20Z ru $"; 40#endif /* not lint */ 41 42#include <sys/param.h> 43#include <sys/protosw.h> 44#include <sys/socket.h> 45#include <sys/time.h> 46 47#include <net/ethernet.h> 48#include <net/if.h> 49#include <net/if_var.h> 50#include <net/if_dl.h> 51#include <net/if_types.h> 52#include <net/route.h> 53 54#include <netinet/in.h> 55#include <netipx/ipx.h> 56#include <netatalk/at.h> 57#include <netgraph/ng_socket.h> 58 59#ifdef NS 60#include <netns/ns.h> 61#endif 62 63#include <sys/sysctl.h> 64 65#include <arpa/inet.h> 66#include <libutil.h> 67#include <netdb.h> 68#include <stdio.h> 69#include <stdlib.h> 70#include <string.h> 71#include <unistd.h> 72#include <err.h> 73#include <time.h> 74#include "netstat.h" 75 76#define kget(p, d) (kread((u_long)(p), (char *)&(d), sizeof (d))) 77 78 79/* alignment constraint for routing socket */ 80#define ROUNDUP(a) \ 81 ((a) > 0 ? (1 + (((a) - 1) | (sizeof(long) - 1))) : sizeof(long)) 82#define ADVANCE(x, n) (x += ROUNDUP((n)->sa_len)) 83 84/* 85 * Definitions for showing gateway flags. 86 */ 87struct bits { 88 u_long b_mask; 89 char b_val; 90} bits[] = { 91 { RTF_UP, 'U' }, 92 { RTF_GATEWAY, 'G' }, 93 { RTF_HOST, 'H' }, 94 { RTF_REJECT, 'R' }, 95 { RTF_DYNAMIC, 'D' }, 96 { RTF_MODIFIED, 'M' }, 97 { RTF_DONE, 'd' }, /* Completed -- for routing messages only */ 98 { RTF_CLONING, 'C' }, 99 { RTF_XRESOLVE, 'X' }, 100 { RTF_LLINFO, 'L' }, 101 { RTF_STATIC, 'S' }, 102 { RTF_PROTO1, '1' }, 103 { RTF_PROTO2, '2' }, 104 { RTF_WASCLONED,'W' }, 105 { RTF_PRCLONING,'c' }, 106 { RTF_PROTO3, '3' }, 107 { RTF_BLACKHOLE,'B' }, 108 { RTF_BROADCAST,'b' }, 109 { 0 } 110}; 111 112typedef union { 113 long dummy; /* Helps align structure. */ 114 struct sockaddr u_sa; 115 u_short u_data[128]; 116} sa_u; 117 118static sa_u pt_u; 119 120int do_rtent = 0; 121struct rtentry rtentry; 122struct radix_node rnode; 123struct radix_mask rmask; 124struct radix_node_head *rt_tables[AF_MAX+1]; 125 126int NewTree = 0; 127 128static struct sockaddr *kgetsa (struct sockaddr *); 129static void p_tree (struct radix_node *); 130static void p_rtnode (void); 131static void ntreestuff (void); 132static void np_rtentry (struct rt_msghdr *); 133static void p_sockaddr (struct sockaddr *, struct sockaddr *, int, int); 134static void p_flags (int, char *); 135static void p_rtentry (struct rtentry *); 136static u_long forgemask (u_long); 137static void domask (char *, u_long, u_long); 138 139/* 140 * Print routing tables. 141 */ 142void 143routepr(u_long rtree) 144{ 145 struct radix_node_head *rnh, head; 146 int i; 147 148 printf("Routing tables\n"); 149 150 if (Aflag == 0 && NewTree) 151 ntreestuff(); 152 else { 153 if (rtree == 0) { 154 printf("rt_tables: symbol not in namelist\n"); 155 return; 156 } 157 158 kget(rtree, rt_tables); 159 for (i = 0; i <= AF_MAX; i++) { 160 if ((rnh = rt_tables[i]) == 0) 161 continue; 162 kget(rnh, head); 163 if (i == AF_UNSPEC) { 164 if (Aflag && af == 0) { 165 printf("Netmasks:\n"); 166 p_tree(head.rnh_treetop); 167 } 168 } else if (af == AF_UNSPEC || af == i) { 169 pr_family(i); 170 do_rtent = 1; 171 pr_rthdr(i); 172 p_tree(head.rnh_treetop); 173 } 174 } 175 } 176} 177 178/* 179 * Print address family header before a section of the routing table. 180 */ 181void 182pr_family(int af) 183{ 184 char *afname; 185 186 switch (af) { 187 case AF_INET: 188 afname = "Internet"; 189 break; 190#ifdef INET6 191 case AF_INET6: 192 afname = "Internet6"; 193 break; 194#endif /*INET6*/ 195 case AF_IPX: 196 afname = "IPX"; 197 break; 198#ifdef NS 199 case AF_NS: 200 afname = "XNS"; 201 break; 202#endif 203 case AF_ISO: 204 afname = "ISO"; 205 break; 206 case AF_APPLETALK: 207 afname = "AppleTalk"; 208 break; 209 case AF_CCITT: 210 afname = "X.25"; 211 break; 212 case AF_NETGRAPH: 213 afname = "Netgraph"; 214 break; 215 default: 216 afname = NULL; 217 break; 218 } 219 if (afname) 220 printf("\n%s:\n", afname); 221 else 222 printf("\nProtocol Family %d:\n", af); 223} 224 225/* column widths; each followed by one space */ 226#ifndef INET6 227#define WID_DST(af) 18 /* width of destination column */ 228#define WID_GW(af) 18 /* width of gateway column */ 229#define WID_IF(af) 6 /* width of netif column */ 230#else 231#define WID_DST(af) \ 232 ((af) == AF_INET6 ? (Wflag ? 39 : (numeric_addr ? 33: 18)) : 18) 233#define WID_GW(af) \ 234 ((af) == AF_INET6 ? (Wflag ? 31 : (numeric_addr ? 29 : 18)) : 18) 235#define WID_IF(af) ((af) == AF_INET6 ? 8 : 6) 236#endif /*INET6*/ 237 238/* 239 * Print header for routing table columns. 240 */ 241void 242pr_rthdr(int af) 243{ 244 245 if (Aflag) 246 printf("%-8.8s ","Address"); 247 if (af == AF_INET || Wflag) 248 if (Wflag) 249 printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %6.6s %*.*s %6s\n", 250 WID_DST(af), WID_DST(af), "Destination", 251 WID_GW(af), WID_GW(af), "Gateway", 252 "Flags", "Refs", "Use", "Mtu", 253 WID_IF(af), WID_IF(af), "Netif", "Expire"); 254 else 255 printf("%-*.*s %-*.*s %-6.6s %6.6s %8.8s %*.*s %6s\n", 256 WID_DST(af), WID_DST(af), "Destination", 257 WID_GW(af), WID_GW(af), "Gateway", 258 "Flags", "Refs", "Use", 259 WID_IF(af), WID_IF(af), "Netif", "Expire"); 260 else 261 printf("%-*.*s %-*.*s %-6.6s %8.8s %6s\n", 262 WID_DST(af), WID_DST(af), "Destination", 263 WID_GW(af), WID_GW(af), "Gateway", 264 "Flags", "Netif", "Expire"); 265} 266 267static struct sockaddr * 268kgetsa(struct sockaddr *dst) 269{ 270 271 kget(dst, pt_u.u_sa); 272 if (pt_u.u_sa.sa_len > sizeof (pt_u.u_sa)) 273 kread((u_long)dst, (char *)pt_u.u_data, pt_u.u_sa.sa_len); 274 return (&pt_u.u_sa); 275} 276 277static void 278p_tree(struct radix_node *rn) 279{ 280 281again: 282 kget(rn, rnode); 283 if (rnode.rn_bit < 0) { 284 if (Aflag) 285 printf("%-8.8lx ", (u_long)rn); 286 if (rnode.rn_flags & RNF_ROOT) { 287 if (Aflag) 288 printf("(root node)%s", 289 rnode.rn_dupedkey ? " =>\n" : "\n"); 290 } else if (do_rtent) { 291 kget(rn, rtentry); 292 p_rtentry(&rtentry); 293 if (Aflag) 294 p_rtnode(); 295 } else { 296 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_key), 297 NULL, 0, 44); 298 putchar('\n'); 299 } 300 if ((rn = rnode.rn_dupedkey)) 301 goto again; 302 } else { 303 if (Aflag && do_rtent) { 304 printf("%-8.8lx ", (u_long)rn); 305 p_rtnode(); 306 } 307 rn = rnode.rn_right; 308 p_tree(rnode.rn_left); 309 p_tree(rn); 310 } 311} 312 313char nbuf[20]; 314 315static void 316p_rtnode(void) 317{ 318 struct radix_mask *rm = rnode.rn_mklist; 319 320 if (rnode.rn_bit < 0) { 321 if (rnode.rn_mask) { 322 printf("\t mask "); 323 p_sockaddr(kgetsa((struct sockaddr *)rnode.rn_mask), 324 NULL, 0, -1); 325 } else if (rm == 0) 326 return; 327 } else { 328 sprintf(nbuf, "(%d)", rnode.rn_bit); 329 printf("%6.6s %8.8lx : %8.8lx", nbuf, (u_long)rnode.rn_left, (u_long)rnode.rn_right); 330 } 331 while (rm) { 332 kget(rm, rmask); 333 sprintf(nbuf, " %d refs, ", rmask.rm_refs); 334 printf(" mk = %8.8lx {(%d),%s", 335 (u_long)rm, -1 - rmask.rm_bit, rmask.rm_refs ? nbuf : " "); 336 if (rmask.rm_flags & RNF_NORMAL) { 337 struct radix_node rnode_aux; 338 printf(" <normal>, "); 339 kget(rmask.rm_leaf, rnode_aux); 340 p_sockaddr(kgetsa((struct sockaddr *)rnode_aux.rn_mask), 341 NULL, 0, -1); 342 } else 343 p_sockaddr(kgetsa((struct sockaddr *)rmask.rm_mask), 344 NULL, 0, -1); 345 putchar('}'); 346 if ((rm = rmask.rm_mklist)) 347 printf(" ->"); 348 } 349 putchar('\n'); 350} 351 352static void 353ntreestuff(void) 354{ 355 size_t needed; 356 int mib[6]; 357 char *buf, *next, *lim; 358 register struct rt_msghdr *rtm; 359 360 mib[0] = CTL_NET; 361 mib[1] = PF_ROUTE; 362 mib[2] = 0; 363 mib[3] = 0; 364 mib[4] = NET_RT_DUMP; 365 mib[5] = 0; 366 if (sysctl(mib, 6, NULL, &needed, NULL, 0) < 0) { 367 err(1, "sysctl: net.route.0.0.dump estimate"); 368 } 369 370 if ((buf = malloc(needed)) == 0) { 371 err(2, "malloc(%lu)", (unsigned long)needed); 372 } 373 if (sysctl(mib, 6, buf, &needed, NULL, 0) < 0) { 374 err(1, "sysctl: net.route.0.0.dump"); 375 } 376 lim = buf + needed; 377 for (next = buf; next < lim; next += rtm->rtm_msglen) { 378 rtm = (struct rt_msghdr *)next; 379 np_rtentry(rtm); 380 } 381} 382 383static void 384np_rtentry(struct rt_msghdr *rtm) 385{ 386 register struct sockaddr *sa = (struct sockaddr *)(rtm + 1); 387#ifdef notdef 388 static int masks_done, banner_printed; 389#endif 390 static int old_af; 391 int af = 0, interesting = RTF_UP | RTF_GATEWAY | RTF_HOST; 392 393#ifdef notdef 394 /* for the moment, netmasks are skipped over */ 395 if (!banner_printed) { 396 printf("Netmasks:\n"); 397 banner_printed = 1; 398 } 399 if (masks_done == 0) { 400 if (rtm->rtm_addrs != RTA_DST ) { 401 masks_done = 1; 402 af = sa->sa_family; 403 } 404 } else 405#endif 406 af = sa->sa_family; 407 if (af != old_af) { 408 pr_family(af); 409 old_af = af; 410 } 411 if (rtm->rtm_addrs == RTA_DST) 412 p_sockaddr(sa, NULL, 0, 36); 413 else { 414 p_sockaddr(sa, NULL, rtm->rtm_flags, 16); 415 sa = (struct sockaddr *)(ROUNDUP(sa->sa_len) + (char *)sa); 416 p_sockaddr(sa, NULL, 0, 18); 417 } 418 p_flags(rtm->rtm_flags & interesting, "%-6.6s "); 419 putchar('\n'); 420} 421 422static void 423p_sockaddr(struct sockaddr *sa, struct sockaddr *mask, int flags, int width) 424{ 425 char workbuf[128], *cplim; 426 register char *cp = workbuf; 427 428 switch(sa->sa_family) { 429 case AF_INET: 430 { 431 register struct sockaddr_in *sin = (struct sockaddr_in *)sa; 432 433 if ((sin->sin_addr.s_addr == INADDR_ANY) && 434 mask && 435 ntohl(((struct sockaddr_in *)mask)->sin_addr.s_addr) 436 ==0L) 437 cp = "default" ; 438 else if (flags & RTF_HOST) 439 cp = routename(sin->sin_addr.s_addr); 440 else if (mask) 441 cp = netname(sin->sin_addr.s_addr, 442 ntohl(((struct sockaddr_in *)mask) 443 ->sin_addr.s_addr)); 444 else 445 cp = netname(sin->sin_addr.s_addr, 0L); 446 break; 447 } 448 449#ifdef INET6 450 case AF_INET6: 451 { 452 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *)sa; 453 struct in6_addr *in6 = &sa6->sin6_addr; 454 455 /* 456 * XXX: This is a special workaround for KAME kernels. 457 * sin6_scope_id field of SA should be set in the future. 458 */ 459 if (IN6_IS_ADDR_LINKLOCAL(in6) || 460 IN6_IS_ADDR_MC_LINKLOCAL(in6)) { 461 /* XXX: override is ok? */ 462 sa6->sin6_scope_id = (u_int32_t)ntohs(*(u_short *)&in6->s6_addr[2]); 463 *(u_short *)&in6->s6_addr[2] = 0; 464 } 465 466 if (flags & RTF_HOST) 467 cp = routename6(sa6); 468 else if (mask) 469 cp = netname6(sa6, 470 &((struct sockaddr_in6 *)mask)->sin6_addr); 471 else { 472 cp = netname6(sa6, NULL); 473 } 474 break; 475 } 476#endif /*INET6*/ 477 478 case AF_IPX: 479 { 480 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 481 if (ipx_nullnet(satoipx_addr(work))) 482 cp = "default"; 483 else 484 cp = ipx_print(sa); 485 break; 486 } 487 case AF_APPLETALK: 488 { 489 if (!(flags & RTF_HOST) && mask) 490 cp = atalk_print2(sa,mask,9); 491 else 492 cp = atalk_print(sa,11); 493 break; 494 } 495 case AF_NETGRAPH: 496 { 497 printf("%s", ((struct sockaddr_ng *)sa)->sg_data); 498 break; 499 } 500#ifdef NS 501 case AF_NS: 502 cp = ns_print(sa); 503 break; 504#endif 505 506 case AF_LINK: 507 { 508 register struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa; 509 510 if (sdl->sdl_nlen == 0 && sdl->sdl_alen == 0 && 511 sdl->sdl_slen == 0) 512 (void) sprintf(workbuf, "link#%d", sdl->sdl_index); 513 else 514 switch (sdl->sdl_type) { 515 516 case IFT_ETHER: 517 if (sdl->sdl_alen == ETHER_ADDR_LEN) { 518 cp = ether_ntoa((struct ether_addr *) 519 sdl->sdl_data + sdl->sdl_nlen); 520 break; 521 } 522 /* FALLTHROUGH */ 523 default: 524 cp = link_ntoa(sdl); 525 break; 526 } 527 break; 528 } 529 530 default: 531 { 532 register u_char *s = (u_char *)sa->sa_data, *slim; 533 534 slim = sa->sa_len + (u_char *) sa; 535 cplim = cp + sizeof(workbuf) - 6; 536 cp += sprintf(cp, "(%d)", sa->sa_family); 537 while (s < slim && cp < cplim) { 538 cp += sprintf(cp, " %02x", *s++); 539 if (s < slim) 540 cp += sprintf(cp, "%02x", *s++); 541 } 542 cp = workbuf; 543 } 544 } 545 if (width < 0 ) 546 printf("%s ", cp); 547 else { 548 if (numeric_addr) 549 printf("%-*s ", width, cp); 550 else 551 printf("%-*.*s ", width, width, cp); 552 } 553} 554 555static void 556p_flags(int f, char *format) 557{ 558 char name[33], *flags; 559 register struct bits *p = bits; 560 561 for (flags = name; p->b_mask; p++) 562 if (p->b_mask & f) 563 *flags++ = p->b_val; 564 *flags = '\0'; 565 printf(format, name); 566} 567 568static void 569p_rtentry(struct rtentry *rt) 570{ 571 static struct ifnet ifnet, *lastif; 572 struct rtentry parent; 573 static char name[16]; 574 static char prettyname[9]; 575 struct sockaddr *sa; 576 sa_u addr, mask; 577 578 /* 579 * Don't print protocol-cloned routes unless -a. 580 */ 581 if (rt->rt_flags & RTF_WASCLONED && !aflag) { 582 kget(rt->rt_parent, parent); 583 if (parent.rt_flags & RTF_PRCLONING) 584 return; 585 } 586 587 bzero(&addr, sizeof(addr)); 588 if ((sa = kgetsa(rt_key(rt)))) 589 bcopy(sa, &addr, sa->sa_len); 590 bzero(&mask, sizeof(mask)); 591 if (rt_mask(rt) && (sa = kgetsa(rt_mask(rt)))) 592 bcopy(sa, &mask, sa->sa_len); 593 p_sockaddr(&addr.u_sa, &mask.u_sa, rt->rt_flags, 594 WID_DST(addr.u_sa.sa_family)); 595 p_sockaddr(kgetsa(rt->rt_gateway), NULL, RTF_HOST, 596 WID_GW(addr.u_sa.sa_family)); 597 p_flags(rt->rt_flags, "%-6.6s "); 598 if (addr.u_sa.sa_family == AF_INET || Wflag) { 599 printf("%6ld %8ld ", rt->rt_refcnt, rt->rt_use); 600 if (Wflag) { 601 if (rt->rt_rmx.rmx_mtu != 0) 602 printf("%6lu ", rt->rt_rmx.rmx_mtu); 603 else 604 printf("%6s ", ""); 605 } 606 } 607 if (rt->rt_ifp) { 608 if (rt->rt_ifp != lastif) { 609 kget(rt->rt_ifp, ifnet); 610 kread((u_long)ifnet.if_name, name, 16); 611 lastif = rt->rt_ifp; 612 snprintf(prettyname, sizeof prettyname, 613 "%s%d", name, ifnet.if_unit); 614 } 615 printf("%*.*s", WID_IF(addr.u_sa.sa_family), 616 WID_IF(addr.u_sa.sa_family), prettyname); 617 if (rt->rt_rmx.rmx_expire) { 618 time_t expire_time; 619 620 if ((expire_time = 621 rt->rt_rmx.rmx_expire - time((time_t *)0)) > 0) 622 printf(" %6d", (int)expire_time); 623 } 624 if (rt->rt_nodes[0].rn_dupedkey) 625 printf(" =>"); 626 } 627 putchar('\n'); 628} 629 630char * 631routename(u_long in) 632{ 633 register char *cp; 634 static char line[MAXHOSTNAMELEN]; 635 struct hostent *hp; 636 637 cp = 0; 638 if (!numeric_addr) { 639 hp = gethostbyaddr((char *)&in, sizeof (struct in_addr), 640 AF_INET); 641 if (hp) { 642 cp = hp->h_name; 643 trimdomain(cp, strlen(cp)); 644 } 645 } 646 if (cp) { 647 strncpy(line, cp, sizeof(line) - 1); 648 line[sizeof(line) - 1] = '\0'; 649 } else { 650#define C(x) ((x) & 0xff) 651 in = ntohl(in); 652 sprintf(line, "%lu.%lu.%lu.%lu", 653 C(in >> 24), C(in >> 16), C(in >> 8), C(in)); 654 } 655 return (line); 656} 657 658static u_long 659forgemask(u_long a) 660{ 661 u_long m; 662 663 if (IN_CLASSA(a)) 664 m = IN_CLASSA_NET; 665 else if (IN_CLASSB(a)) 666 m = IN_CLASSB_NET; 667 else 668 m = IN_CLASSC_NET; 669 return (m); 670} 671 672static void 673domask(char *dst, u_long addr, u_long mask) 674{ 675 register int b, i; 676 677 if (!mask || (forgemask(addr) == mask)) { 678 *dst = '\0'; 679 return; 680 } 681 i = 0; 682 for (b = 0; b < 32; b++) 683 if (mask & (1 << b)) { 684 register int bb; 685 686 i = b; 687 for (bb = b+1; bb < 32; bb++) 688 if (!(mask & (1 << bb))) { 689 i = -1; /* noncontig */ 690 break; 691 } 692 break; 693 } 694 if (i == -1) 695 sprintf(dst, "&0x%lx", mask); 696 else 697 sprintf(dst, "/%d", 32-i); 698} 699 700/* 701 * Return the name of the network whose address is given. 702 * The address is assumed to be that of a net or subnet, not a host. 703 */ 704char * 705netname(u_long in, u_long mask) 706{ 707 char *cp = 0; 708 static char line[MAXHOSTNAMELEN]; 709 struct netent *np = 0; 710 u_long dmask; 711 register u_long i; 712 713#define NSHIFT(m) ( \ 714 (m) == IN_CLASSA_NET ? IN_CLASSA_NSHIFT : \ 715 (m) == IN_CLASSB_NET ? IN_CLASSB_NSHIFT : \ 716 (m) == IN_CLASSC_NET ? IN_CLASSC_NSHIFT : \ 717 0) 718 719 i = ntohl(in); 720 dmask = forgemask(i); 721 if (!numeric_addr && i) { 722 np = getnetbyaddr(i >> NSHIFT(mask), AF_INET); 723 if (np == NULL && mask == 0) 724 np = getnetbyaddr(i >> NSHIFT(dmask), AF_INET); 725 if (np != NULL) { 726 cp = np->n_name; 727 trimdomain(cp, strlen(cp)); 728 } 729 } 730#undef NSHIFT 731 if (cp != NULL) { 732 strncpy(line, cp, sizeof(line) - 1); 733 line[sizeof(line) - 1] = '\0'; 734 } else { 735 switch (dmask) { 736 case IN_CLASSA_NET: 737 if ((i & IN_CLASSA_HOST) == 0) { 738 sprintf(line, "%lu", C(i >> 24)); 739 break; 740 } 741 /* FALLTHROUGH */ 742 case IN_CLASSB_NET: 743 if ((i & IN_CLASSB_HOST) == 0) { 744 sprintf(line, "%lu.%lu", 745 C(i >> 24), C(i >> 16)); 746 break; 747 } 748 /* FALLTHROUGH */ 749 case IN_CLASSC_NET: 750 if ((i & IN_CLASSC_HOST) == 0) { 751 sprintf(line, "%lu.%lu.%lu", 752 C(i >> 24), C(i >> 16), C(i >> 8)); 753 break; 754 } 755 /* FALLTHROUGH */ 756 default: 757 sprintf(line, "%lu.%lu.%lu.%lu", 758 C(i >> 24), C(i >> 16), C(i >> 8), C(i)); 759 break; 760 } 761 } 762 domask(line + strlen(line), i, mask); 763 return (line); 764} 765 766#ifdef INET6 767char * 768netname6(struct sockaddr_in6 *sa6, struct in6_addr *mask) 769{ 770 static char line[MAXHOSTNAMELEN]; 771 u_char *p = (u_char *)mask; 772 u_char *lim; 773 int masklen, illegal = 0, flag = NI_WITHSCOPEID; 774 775 if (mask) { 776 for (masklen = 0, lim = p + 16; p < lim; p++) { 777 switch (*p) { 778 case 0xff: 779 masklen += 8; 780 break; 781 case 0xfe: 782 masklen += 7; 783 break; 784 case 0xfc: 785 masklen += 6; 786 break; 787 case 0xf8: 788 masklen += 5; 789 break; 790 case 0xf0: 791 masklen += 4; 792 break; 793 case 0xe0: 794 masklen += 3; 795 break; 796 case 0xc0: 797 masklen += 2; 798 break; 799 case 0x80: 800 masklen += 1; 801 break; 802 case 0x00: 803 break; 804 default: 805 illegal ++; 806 break; 807 } 808 } 809 if (illegal) 810 fprintf(stderr, "illegal prefixlen\n"); 811 } 812 else 813 masklen = 128; 814 815 if (masklen == 0 && IN6_IS_ADDR_UNSPECIFIED(&sa6->sin6_addr)) 816 return("default"); 817 818 if (numeric_addr) 819 flag |= NI_NUMERICHOST; 820 getnameinfo((struct sockaddr *)sa6, sa6->sin6_len, line, sizeof(line), 821 NULL, 0, flag); 822 823 if (numeric_addr) 824 sprintf(&line[strlen(line)], "/%d", masklen); 825 826 return line; 827} 828 829char * 830routename6(struct sockaddr_in6 *sa6) 831{ 832 static char line[MAXHOSTNAMELEN]; 833 int flag = NI_WITHSCOPEID; 834 /* use local variable for safety */ 835 struct sockaddr_in6 sa6_local = {AF_INET6, sizeof(sa6_local),}; 836 837 sa6_local.sin6_addr = sa6->sin6_addr; 838 sa6_local.sin6_scope_id = sa6->sin6_scope_id; 839 840 if (numeric_addr) 841 flag |= NI_NUMERICHOST; 842 843 getnameinfo((struct sockaddr *)&sa6_local, sa6_local.sin6_len, 844 line, sizeof(line), NULL, 0, flag); 845 846 return line; 847} 848#endif /*INET6*/ 849 850/* 851 * Print routing statistics 852 */ 853void 854rt_stats(u_long rtsaddr, u_long rttaddr) 855{ 856 struct rtstat rtstat; 857 int rttrash; 858 859 if (rtsaddr == 0) { 860 printf("rtstat: symbol not in namelist\n"); 861 return; 862 } 863 if (rttaddr == 0) { 864 printf("rttrash: symbol not in namelist\n"); 865 return; 866 } 867 kread(rtsaddr, (char *)&rtstat, sizeof (rtstat)); 868 kread(rttaddr, (char *)&rttrash, sizeof (rttrash)); 869 printf("routing:\n"); 870 871#define p(f, m) if (rtstat.f || sflag <= 1) \ 872 printf(m, rtstat.f, plural(rtstat.f)) 873 874 p(rts_badredirect, "\t%u bad routing redirect%s\n"); 875 p(rts_dynamic, "\t%u dynamically created route%s\n"); 876 p(rts_newgateway, "\t%u new gateway%s due to redirects\n"); 877 p(rts_unreach, "\t%u destination%s found unreachable\n"); 878 p(rts_wildcard, "\t%u use%s of a wildcard route\n"); 879#undef p 880 881 if (rttrash || sflag <= 1) 882 printf("\t%u route%s not in table but not freed\n", 883 rttrash, plural(rttrash)); 884} 885 886char * 887ipx_print(struct sockaddr *sa) 888{ 889 u_short port; 890 struct servent *sp = 0; 891 char *net = "", *host = ""; 892 register char *p; 893 register u_char *q; 894 struct ipx_addr work = ((struct sockaddr_ipx *)sa)->sipx_addr; 895 static char mybuf[50]; 896 char cport[10], chost[15], cnet[15]; 897 898 port = ntohs(work.x_port); 899 900 if (ipx_nullnet(work) && ipx_nullhost(work)) { 901 902 if (port) { 903 if (sp) 904 sprintf(mybuf, "*.%s", sp->s_name); 905 else 906 sprintf(mybuf, "*.%x", port); 907 } else 908 sprintf(mybuf, "*.*"); 909 910 return (mybuf); 911 } 912 913 if (ipx_wildnet(work)) 914 net = "any"; 915 else if (ipx_nullnet(work)) 916 net = "*"; 917 else { 918 q = work.x_net.c_net; 919 sprintf(cnet, "%02x%02x%02x%02x", 920 q[0], q[1], q[2], q[3]); 921 for (p = cnet; *p == '0' && p < cnet + 8; p++) 922 continue; 923 net = p; 924 } 925 926 if (ipx_wildhost(work)) 927 host = "any"; 928 else if (ipx_nullhost(work)) 929 host = "*"; 930 else { 931 q = work.x_host.c_host; 932 sprintf(chost, "%02x%02x%02x%02x%02x%02x", 933 q[0], q[1], q[2], q[3], q[4], q[5]); 934 for (p = chost; *p == '0' && p < chost + 12; p++) 935 continue; 936 host = p; 937 } 938 939 if (port) { 940 if (strcmp(host, "*") == 0) 941 host = ""; 942 if (sp) 943 snprintf(cport, sizeof(cport), 944 "%s%s", *host ? "." : "", sp->s_name); 945 else 946 snprintf(cport, sizeof(cport), 947 "%s%x", *host ? "." : "", port); 948 } else 949 *cport = 0; 950 951 snprintf(mybuf, sizeof(mybuf), "%s.%s%s", net, host, cport); 952 return(mybuf); 953} 954 955char * 956ipx_phost(struct sockaddr *sa) 957{ 958 register struct sockaddr_ipx *sipx = (struct sockaddr_ipx *)sa; 959 struct sockaddr_ipx work; 960 static union ipx_net ipx_zeronet; 961 char *p; 962 struct ipx_addr in; 963 964 work = *sipx; 965 in = work.sipx_addr; 966 967 work.sipx_addr.x_port = 0; 968 work.sipx_addr.x_net = ipx_zeronet; 969 p = ipx_print((struct sockaddr *)&work); 970 if (strncmp("*.", p, 2) == 0) p += 2; 971 972 return(p); 973} 974 975#ifdef NS 976short ns_nullh[] = {0,0,0}; 977short ns_bh[] = {-1,-1,-1}; 978 979char * 980ns_print(struct sockaddr *sa) 981{ 982 register struct sockaddr_ns *sns = (struct sockaddr_ns*)sa; 983 struct ns_addr work; 984 union { union ns_net net_e; u_long long_e; } net; 985 u_short port; 986 static char mybuf[50], cport[10], chost[25]; 987 char *host = ""; 988 register char *p; register u_char *q; 989 990 work = sns->sns_addr; 991 port = ntohs(work.x_port); 992 work.x_port = 0; 993 net.net_e = work.x_net; 994 if (ns_nullhost(work) && net.long_e == 0) { 995 if (port ) { 996 sprintf(mybuf, "*.%xH", port); 997 upHex(mybuf); 998 } else 999 sprintf(mybuf, "*.*"); 1000 return (mybuf); 1001 } 1002 1003 if (bcmp(ns_bh, work.x_host.c_host, 6) == 0) { 1004 host = "any"; 1005 } else if (bcmp(ns_nullh, work.x_host.c_host, 6) == 0) { 1006 host = "*"; 1007 } else { 1008 q = work.x_host.c_host; 1009 sprintf(chost, "%02x%02x%02x%02x%02x%02xH", 1010 q[0], q[1], q[2], q[3], q[4], q[5]); 1011 for (p = chost; *p == '0' && p < chost + 12; p++) 1012 continue; 1013 host = p; 1014 } 1015 if (port) 1016 sprintf(cport, ".%xH", htons(port)); 1017 else 1018 *cport = 0; 1019 1020 sprintf(mybuf,"%xH.%s%s", ntohl(net.long_e), host, cport); 1021 upHex(mybuf); 1022 return(mybuf); 1023} 1024 1025char * 1026ns_phost(struct sockaddr *sa) 1027{ 1028 register struct sockaddr_ns *sns = (struct sockaddr_ns *)sa; 1029 struct sockaddr_ns work; 1030 static union ns_net ns_zeronet; 1031 char *p; 1032 1033 work = *sns; 1034 work.sns_addr.x_port = 0; 1035 work.sns_addr.x_net = ns_zeronet; 1036 1037 p = ns_print((struct sockaddr *)&work); 1038 if (strncmp("0H.", p, 3) == 0) 1039 p += 3; 1040 return(p); 1041} 1042#endif 1043 1044void 1045upHex(char *p0) 1046{ 1047 register char *p = p0; 1048 1049 for (; *p; p++) 1050 switch (*p) { 1051 1052 case 'a': 1053 case 'b': 1054 case 'c': 1055 case 'd': 1056 case 'e': 1057 case 'f': 1058 *p += ('A' - 'a'); 1059 break; 1060 } 1061} 1062